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Molecular size distribution of Pu in the presence of humic substances in river and groundwaters

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Title: Molecular size distribution of Pu in the presence of humic substances in river and groundwaters
Authors: Nagao, S. Browse this author
Sakamoto, Y. Browse this author
Tanaka, T. Browse this author
Rao, R. R. Browse this author
Keywords: Plutonium
humic substances
organic complexes
molecular size distribution
aquatic environments
Issue Date: Jul-2007
Publisher: Akadémiai Kiadó, co-published with Springer Science+Business Media B.V.
Journal Title: Journal of Radioanalytical and Nuclear Chemistry
Volume: 273
Issue: 1
Start Page: 135
End Page: 139
Publisher DOI: 10.1007/s10967-007-0724-x
Abstract: The association properties of Pu with aquatic humic substances in a 0.01M NaClO4 solution at pH 6–8 were studied on the basis of molecular size distribution. Seven humic substances were isolated from river water and groundwaters using XAD extraction technique. They were used for comparing their effects on the association of Pu. In the presence of humic acid, the dominant molecular size of Pu was 100–30 kDa. In the presence of fulvic acid, Pu exhibited three dominant molecular sizes: 30–10 kDa, 30–5 kDa, and less than 5 kDa. The association of Pu-humus complexes might be controlled by the molecular size distribution of humic substances and characteristics of their respective size fractions.
Rights: The original publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/28234
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 長尾 誠也

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